SAN FRANCISCO (Reuters) - A U.S. judge expressed skepticism toward a bid by Airbnb to halt a San Francisco law that imposes fines on home rental companies for processing bookings by hosts not registered with the city.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=mWimWn-mU6w:KVHqVeyHJb4:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=mWimWn-mU6w:KVHqVeyHJb4:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=mWimWn-mU6w:KVHqVeyHJb4:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=mWimWn-mU6w:KVHqVeyHJb4:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=mWimWn-mU6w:KVHqVeyHJb4:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/mWimWn-mU6w" height="1" width="1" alt="" />